Application Archives

SSL Key Ownership

Post author:larry
Post published:Feb 9, 2020
Post category:IT Application Software Tools
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Issue: After receiving renewal notice from Let's Encrypt for Jupyter server, go to the virtual machine hosting Jupyter and renew the key successfully. But cannot login to the jupyter notebook…

MathJax Load Failed – WP Security Plugin

Post author:larry
Post published:Nov 14, 2019
Post category:IT Application CMS Software
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Issue After installing a WordPress security plugin call All-In-One WP Security, MathJax failed to load some JS including. Solution In the setting of the plugin, choose the tab Additional Firewall…

Centos7 Virtualmin Upgrade PHP7 MariaDB

Post author:larry
Post published:Feb 28, 2019
Post category:Cloud CMS IT Software System Uncategorized Virtualization
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This is my first blog after upgrading to WordPress 5.1 from ver.4.8. Yes, I never tried 5.0 as it's always risky to have a major upgrade to ver. x.0. The…

WordPress Duplicator Plugin Server Error 500

Post author:larry
Post published:Apr 21, 2017
Post category:IT CMS Software
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Issue: During scanning stage of running the Duplicator plugin on a WordPress site, there was an error: Server Error 500. Solution: Modify /etc/php.ini file to increase memory: memory_limit = 256M…

WP Fastest Cache Plugins Update Issue

Post author:larry
Post published:Apr 4, 2017
Post category:IT Application CMS Software
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Issue: After installing WP Fastest Cache plugin, whenever update any plugin, there is error - Update failed. Could not remove old plugin. Solution: Go to WPFC at the top bar…

Scrolling to Section ID Missing

Post author:larry
Post published:Mar 1, 2017
Post category:IT Application CMS Software

Issue: When moving some of the content to a single page design, the menu link will be addressing the div id instead of another page. But after all set up…

WooCommerce Showing Unmatched Variations

Post author:larry
Post published:Jan 20, 2017
Post category:IT Application CMS Software

Issue: error: "Sorry, no products matched your selection. Please choose a different combination." WooCommerce in WordPress shows all variations of variable product including unmatched variations thus the above error message may…

WordPress Custom CSS Disappear

Post author:larry
Post published:Jan 2, 2017
Post category:IT Application CMS Software

Background: It is quite terrifying if suddenly all the custom CSS disappear and you do not have a backup of the text of the custom CSS that is not just one or…

MathJax Incompatibility to LaTex

Post author:larry
Post published:Dec 7, 2016
Post category:IT Application CMS

Issue: "Error: Missing argument to \begin" when using \color command and together with \boxed command in WordPress with MathJax plugin as if they are under LaTex syntax. Solution: Adding {}…

iMac View Camera Capability

Post author:larry
Post published:Nov 19, 2016
Post category:IT Application Hardware Multimedia Software

Issue: While conducting Online Live Class using Join.Me, and I need to select real-time video as profile. However, it seems that the built-in view camera in iMac cannot make any adjustment.…